Fluid-motive power-pump.



H. T. PARNSWORTH.

APPLICATION FILED NOV.12| 1904.

PATBNTED DEG. 19, 1905.

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14W- j im Lf 'f 47? w51 PATENTED DEC. 19, 1905 H. T. PARNSWORTH. FLUIDMOTIVE POWER PUMP.

APPLICATION FILED NOV. 12, 1904.

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ventor.

ttomegs UNITED STATES PATENT OFFIOE.

HENRY T. FARNSWORTH, OFl GLADE SPRING, VIRGINIA, ASSIGNOR OF ONE-HALF TOGEORGE NEWTON WERTZ, OF ABINGDON, VIRGINIA.

FLUID-MOTIVE POWER-PUMP.

Specification of Letters Patent.

Patented Dec. 19, 1905.

Application led November 12, 1904-.. Serial No. 232,512.

of Virginia, have invented a new and useful Fluid-Motive Power-Pump, ofwhich the following is a speciiication.

The principal object of the present invention is to provide a pump inwhich the pressure or head of a body of water may be employed for thepumping of another body of water or air or other fluids.

A further object of the invention is to provide a novel form of pump inwhich the pumping action will be regular and will not iiuctuate to anyappreciable extent when the volume of water is altered.

Vith these and other objects in view, as will more fully hereinafterappear, the invention consists in certain novel features of constructionand arrangement of parts hereinafter fully described, illustrated in theaccompanying drawings, and particularly pointed out in the appendedclaims, it being understood that various changes in the form,proportions, size, and minor details of the structure may be madewithout departing from the spirit or sacrificing any of the advantagesof the invention.

In the accompanying drawings, Figure 1 is a sectional elevation of apump constructed in accordance with the invention. Fig. 2 is a similarView of a portion of the same, showing the piston elevated and thedischarge-valve open. Fig. 3 is a sectional plan'view of the pump on theline 3 3 of Fig. l. Fig. 4 is a detail sectional view, on an enlargedscale, of the air-pumping piston. Fig. 5 is an inverted plan view of thesame. Fig. 6 is a detail perspective view of the valve-actuating weightdetached. Fig. 7 is a plan view of the division-plate, which may beplaced at the lower end of the cylinder.

Similar numerals of reference are employed to indicate correspondingparts throughout the several iigures of the drawings.

The base 10 of the machine is provided with a water-inlet pipe11,through which water may be admitted from any source of supply, and awater-discharge port 12, through which the water escapes after eachreciprocation of the piston. To the base is secured a power-cylinder 13,the upper end of which is open, and to the cylinderis secured a crossbar or yoke 14, carrying an upper cylinder 15, that preferably is ofsmaller diameter than the powercylinder 13, the lower end of saidcylinder l5 being open for the admission of air. To the upper end of thecylinder 15 is secured a casing 16, from which leads a pipe 17, that isconnected to a reservoir where the air is to be stored orto any pointwhere the air-pressure is to be utilized. A

The base or water-chamber lO is approximately of rectangular form and isprovided with an inlet-port 20, through which the water enters tooperate the pump, the water-inlet being at one side of the chamber andthe outlet 12 at the opposite side thereof. Extending transverselyacross the chamber is a horizontally-disposed pivot-bar 22, on which ismounted a pair of valve-carrying levers 23, the heavier ends of whichare at the inlet side of the casing. Secured to the heavier ends of thebars is a valve 2A for controlling the entrance of water through theport 20, and at the opposite ends of said levers is secured anoutlet-valve 25 of much lighter weight, so that if left free the valve24 will close by gravity. The front wall of the inlet-chamber, in whichthe port 20 is formed, is arranged on a curved line struck from thecenter of the pivot-bar, and the face of the valve is likewise curved.The rear Wall, in which the outlet-port 12 is formed, is disposed at anangle oblique t0 the base, and the outlet-valve 25 is correspond- 'inglyarranged, so that it will be held closed by the weight and current forceof the water running into the chamber. Pivotally mounted on the bar 22is a Weighted arm 27, the weighted end being disposed toward the inletside of the chamber,and in the weight is formed an elongated slot 28,the side walls of which are arranged on arcuate lines struck from thecenter of the pivot-bar. Through this slot extends a small pin orcross-bar 29, that is rigidly secured to the two weighted levers 23, theslot permitting the independent movement to a limited extent of theweight and the valves. The weighted lever 27 is connected at its rearend to a vertically-disposed rod 30, on which are secured two collars 31and 32, for a pur.- pose hereinafter described.

The power-cylinderfl?)v receives a piston 32', provided with suitablepacking and carrying a hollow piston-rod .33, that extends through thepiston and is provided at its lower end with a cap 34, having an.opening for the pas- IOO IOS

sage of the rod 30. This piston is raised from the position shown inFig. 1 to the position shown in Fig. 2 by the volume of water enteringthrough the port 20, and as soon as it reaches the position shown inFig. 2 the cap 34 will come into contact with the collar 31 and willraise the rod 30 and act through the weighted lever to close theinlet-port and open the outlet-port to permit theescape of water fromthe cylinder. To the upper end of the piston-rod is secured a piston 38,that fits within the air-pumping cylinder 15, and in order t0 preventthe entrance of water to said cylinder the hollow piston-rod 33 is madein two sections coupled by a sleeve 40, and a closingplug 41 is placedbetween the two sections to prevent the passage of water to the upperend of the rod.

The piston 38 is formed of an upper ring 43 and a lower ring 44, thelatter being preferably extended to form the upper section of thepiston-rod. The rings 43 and 44 have iaring iianges that are arrangedparallel with each other, and between them is placed a ring 45, formedof leather or other suitable packing material, the packing beingconfined in place by pins or bolts 46. This packing is so arranged thatit presents a comparatively t-hin edge to the surface of theair-cylinder and will be held tightly in place by the compressed air, sothat leakage will be reduced to a minimum. The upper ring 43 is faced toform a valve-seat 48, on which rests a valve 49, the various members ofthe valve being rigidly secured together by a bolt 50, that extendsthrough a suitable guiding-opening in the lower ring and is providedwith an enlarged head 51, which limits opening movement of said valve.The periphery of the lower ring 44 is provided with a number of air-let`openings 52, through which air passes on the downstroke ofthe pistonand opens the valve 49, the air thence passing into the upper portion ofthe air-pumping cylinder 15.

At the top of the cylinder 15 is a flanged cap 54, the top of which isfaced to forma valve-seat, and in the cap are formed openings 55,through which the air may escape from the cylinder on the upstroke ofthe piston. On the valve-seat rests a valve 56, that is guided by a bolt57, extending through a suitable openingw in the center of the cap, thelower end of said bolt being provided with an enlarged head to limitopening movement of said valve. The flange of the cap 54 is providedWith internal threads for the reception of the threaded upper end of thecylinder 15, and the outer face of the flange is provided with threadsfor the reception of internal threads formed on the valve-casing 16.

In the operation of the device, the parts being in the position shown inFig. 1, the volume of Water entering through the port 20 will bedeflected by the inclined bottom portion of said casing into contactwththe piston, so that the force of the entering stream of water will beutilized to the best advantage. Owing to the inclined position of theoutletvalve when closed, the weight and force of the current of waterentering the casing will maintain said valve in its closed positionuntil the piston nears the limit of its upward movement. The wateracting on the piston 32' forces the latter upward to the position shownin Fig. 2, and during this upward movement Vthe air in the upper portionof the cylinder 15 is forced outward through the openings 55 to thedischarge-pipe 17. When the piston nears the limit of itsupwardmovement, the cap 34 engages the collar` 31 and raises the rod 30. Thismoves the weighted end of the lever '27 downward, and the upper end ofthe slot 28 engages the bar 29 and displaces the valve. As theinlet-valve is heavier than the discharge-valve, the parts will move tothe position shown in Fig. 2, closing the inlet-port and opening theoutlet-port 12 to permit the discharge of water from the chamber andcylinder by gravity. As the water flows out the piston 32' descends,carrying with it the piston 38, and as the latter moves down air willpass through the ports 52 and will open the valve 49 and flow into theupper portion of the air-cylinder 15. When the piston 32 nears the limitof its downward movement, the cap 34 will engage the lower collar 32 andthe weighted end of the lever 27 will be raised until'the lower portionof the slot 28 engages the cross-bar 29 and moves the valves to theposition shown in Fig. 1, thus closing the outlet and again permittingwater to flow through the inlet-port 20.

It will be observed that by inclining the bottom, as indicated at 60,the volume of inflowing water will be directed into contact with thepiston, andat the same time theweight of the water will be imposed onthe inclined face of the discharge-valve and retain the latter in closedposition.

By the employment of the weighted lever 27 it is found that theoperation of the pump is uniform and will not vary or become irregularwith change in the head of water operating the pumping-piston.

It is obvious that in lieu of pumping air into the cylinder 15 water orother fluid may be pumped and the device used for the pumping of purewater from a limited source of supply by means of a larger volume ofpure or comparatively impure water, such conditions being found where aspring is located adjacent to a running stream.

In some cases'where there is a heavy head of water the piston will :notat all times descend. To provide forthis a division-plate is introducedbetween the lower end of the cylinder 13 and the base 10. .Thedivision-plate is provided with an opening, one wall of which is bentdownward to form an inclined flange or apronv 66, that will to someextent prevent IOO IIO

the current of water acting directly on the piston. This is used,however, only where the water is under high pressure.

Having thus described the invention, what is claimed isl. Thecombination with a casing, of a pivotrod, a pair of valve-carryinglevers mounted thereon, inlet and discharge valves carried by saidlevers, a cross-bar connecting the levers,

a weighted lever mounted on the pivot-rod and provided with a slot forthe passage of the cross-bar, a cylinder in communication with thecasing, a piston disposed in said cylinder and exposed towater-pressure, and means for transmitting movement from the piston tothe weighted lever.

2. The combination with a casing having inlet and discharge ports, of apair of connected valves for successively opening and closing saidports, said valves being pivotally mounted, and the inlet-valve beingmovable to closed position by gravity, a counterweighted lever formoving said valves, the lever having limited play independent of saidvalves, a cylinder, a piston disposed therein, and means for connectingsaid piston to the weighted lever.

8. The combination with a casing having inlet and discharge ports, of apair or' superposed cylinders, pistons arranged in said cylinders, ahollow stem or rod connecting such pistons, a cap member at the lowerend of said stem or rod, a valve-operating rod extending through the capto theinterior of the stem and provided with collars near its upper andlower ends to be engaged by said cap, pivotallymounted valves in thecasing, a counterweighted lever for transmitting movement to saidvalves, and means for connecting the lever to the valve-operating rod.

4. The combination with a casing having inlet and discharge ports,controlling-valves therefor, a pair of superposed cylinders, of whichthe lowest is in communication with the casing, pistons arranged in saidcylinders, a hollow stem connecting said pistons, a closingplug arrangedin the stem, and a valve-operating rod extending through said stem andserving to transmit movement to the valves.

5. In a device of the class specified, the combination with a casinghaving inlet and discharge ports, of valves for controlling the iiow ofHuid through said ports, a cylinder in communication with the casing, adivision plate or ring between the casing and cylinder and provided witha pendent flange or deliectingapron facing the inlet-port, and apumpingpiston in said cylinder.

In ltestimony that I claim the foregoing as my own I have hereto alixedmy signature in the presence of two witnesses.

HENRY I`. FARNSWORTI-I.

Witnesses:

M. M. MoRRIss, GEO. A. C. BEATTIE.

